/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.flink.formats.parquet.utils;

import org.apache.hadoop.conf.Configuration;

import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.Serializable;

/**
 * Wrap {@link Configuration} to a serializable class.
 */
public class SerializableConfiguration implements Serializable {

	private static final long serialVersionUID = 1L;

	private Configuration conf;

	public SerializableConfiguration(Configuration conf) {
		this.conf = conf;
	}

	public Configuration conf() {
		return conf;
	}

	private void writeObject(ObjectOutputStream out) throws IOException {
		conf.write(out);
	}

	private void readObject(ObjectInputStream in) throws IOException, ClassNotFoundException {
		if (conf == null) {
			conf = new Configuration();
		}
		conf.readFields(in);
	}
}
